Not every herb garden needs a hydroponic system. This soil-based recipe is perfect for growers who want the simplicity and forgiveness of soil while still optimizing nutrients for the best possible herb quality. By combining fast-growing herbs (parsley, chives, cilantro) with woody perennials (rosemary, thyme, oregano), you create a diverse, productive herb garden with year-round harvests.
Soil provides a natural nutrient buffer and microbial ecosystem that many herbs thrive in. Mediterranean herbs like rosemary, thyme, and oregano actually prefer slightly nutrient-poor, well-drained soil that mimics their native habitat — over-fertilizing these herbs reduces their essential oil concentration and dulls their flavor. This recipe uses a light-feeding strategy for woody herbs and a moderate-feeding approach for leafy herbs.
The soil mix combines a quality potting soil with perlite for drainage and worm castings for slow-release organic nutrition. Supplemental feeding uses Fox Farm's liquid fertilizer line, which provides both organic and readily available nutrients. The key insight is that herbs grown for flavor should be fed less than herbs grown for bulk — mild nutrient stress concentrates essential oils and produces more aromatic, flavorful herbs.
Recipe for Mixed Herbs in soil. NPK target: 120-35-160 ppm. Optimal pH: 6.5; EC: 1 mS/cm. Duration: 60 days.
Fertilizer ingredients:
1. 2 tsp/gal Grow Big by Fox Farm. Concentration: 6-4-4. Notes: Use at half strength for Mediterranean herbs (rosemary, thyme, oregano)
2. 4 tbsp/gal Big Bloom by Fox Farm. Concentration: 0.01-0.3-0.7. Notes: Gentle organic formula safe for all herbs at every watering
3. 1 tsp/gal Tiger Bloom by Fox Farm. Concentration: 2-8-4. Notes: Only for herbs going to flower (chives) or if growing herb seeds
4. 2 cups per pot (top dress) Worm Castings by Wiggle Worm. Concentration: 1-0-0 (slow release). Notes: Slow-release organic nitrogen and beneficial microbes
5. 1 tbsp per gallon of soil mix Dolomite Lime by Espoma. Concentration: Calcium/Magnesium carbonate. Notes: Buffers soil pH to 6.5 and provides calcium and magnesium
Mixing instructions:
Step 1: Prepare the Herb Garden Soil Mix. Mix a well-draining herb-specific soil: 60% quality potting soil (Fox Farm Ocean Forest or similar), 25% perlite for drainage, 10% worm castings for slow-release nutrition, and 5% vermiculite for moisture retention. Add 1 tablespoon of dolomite lime per gallon of mix to buffer pH to 6.5. Fill pots or raised bed, leaving 1 inch from the rim for watering. Allow the mix to settle and moisten evenly before planting. Duration: 1 hour. Tips: Fox Farm Ocean Forest has enough nutrients for 3-4 weeks without additional fertilizer Mediterranean herbs need extra perlite (up to 40%) for better drainage Never use garden soil in pots — it compacts and lacks proper drainage
Step 2: Plant Herb Starts or Seeds. For fastest results, use established herb starts from a nursery. For seeds: parsley and cilantro sow directly at 1/4 inch depth; start rosemary and thyme indoors 8-10 weeks before desired transplant date. Space herbs appropriately: rosemary 12-18 inches, thyme and oregano 8-12 inches, parsley and chives 6-8 inches. Group herbs by water needs — Mediterranean herbs (rosemary, thyme, oregano) together, and water-loving herbs (parsley, chives, cilantro) together. Duration: 30 minutes. Tips: Rosemary and thyme from seed take 14-21 days to germinate — starts are much easier Group by water needs to prevent overwatering drought-tolerant Mediterranean herbs Cilantro bolts quickly in warm weather — plant in succession every 3 weeks for continuous supply
Step 3: Establish Watering and Feeding Schedule. Water when the top inch of soil feels dry. Mediterranean herbs prefer to dry out slightly between waterings — water every 3-5 days. Leafy herbs (parsley, chives, cilantro) prefer consistent moisture — water every 2-3 days. Begin fertilizing 3-4 weeks after planting with Fox Farm Big Bloom at every watering and Grow Big at half strength every other watering for leafy herbs. Duration: Ongoing. Tips: Overwatering is the number one herb killer — when in doubt, wait a day Herbs in clay pots dry faster than plastic — adjust watering frequency accordingly Mediterranean herbs fed too heavily produce lush but bland growth — less is more
Step 4: Provide Adequate Light and Temperature. Herbs need 6-8 hours of direct sunlight or 12-16 hours under grow lights at 200-400 PPFD. South-facing windows provide the most light for indoor gardens. If using grow lights, position 12-18 inches above the herbs. Maintain temperature between 60-75°F. Most herbs tolerate cool nights (55-60°F) and this actually concentrates essential oils and improves flavor. Duration: Ongoing. Tips: Rosemary and thyme tolerate full, intense light — place them closest to the light source Cilantro and parsley prefer slightly cooler conditions and tolerate partial shade Cool night temperatures (55-60°F) improve essential oil concentration in most herbs
Step 5: Harvest Regularly to Promote Bushy Growth. Begin harvesting when plants are 6+ inches tall with at least 3-4 sets of mature leaves. For leafy herbs (parsley, cilantro, chives), cut outer stems at the base, leaving the center growing. For woody herbs (rosemary, thyme, oregano), snip stem tips above a node, removing no more than 1/3 of the plant at a time. Regular harvesting promotes branching and prevents flowering, which changes flavor. Duration: Ongoing from week 4-6. Tips: Harvest in the morning after dew dries but before midday heat for peak essential oil content Pinch basil and oregano flowers immediately to maintain leaf production and flavor Chive flowers are edible and delicious — allow some to bloom for culinary use
Weekly schedule:
Week 1: Prepare soil mix and fill pots/beds Plant herb starts or sow seeds Water thoroughly to settle soil Position under appropriate lighting Notes: No additional fertilizer needed — soil mix nutrients are sufficient for 3-4 weeks.
Week 2: Monitor seedling emergence or transplant establishment Water as soil surface dries Ensure adequate light (6+ hours) Check for damping off in seedlings Notes: Still relying on soil mix nutrients. Keep soil evenly moist for new plantings.
Week 3: Begin light fertilizing with Big Bloom only Thin seedlings if direct-sown Increase light exposure if growth is leggy Top-dress with worm castings Notes: Big Bloom only at this stage — gentle organic formula safe for young plants.
Week 4: Begin full feeding schedule (Big Bloom + Grow Big) Use half-strength Grow Big for Mediterranean herbs First light harvests of fast-growing herbs (chives, parsley) Monitor soil pH (target 6.2-6.8) Notes: Full feeding for leafy herbs, half-strength for Mediterranean varieties.
Week 5: Continue feeding schedule Regular harvesting to promote bushiness Pinch any flower buds on oregano and basil Re-sow cilantro for succession planting Notes: Established feeding rhythm. Harvest regularly for best productivity.
Week 6: Maintain watering and feeding routine Top-dress with worm castings again Prune woody herbs to encourage branching Monitor for pests (spider mites, aphids) Notes: Monthly worm casting top-dress. Garden should be in full production.
Week 7: Continue harvesting 2-3 times per week Flush soil with plain water monthly to prevent salt buildup Replace any bolted cilantro with new seedlings Maintain consistent moisture Notes: Monthly soil flush with plain water, then resume feeding.
Week 8: Review garden health and adjust as needed Plan for long-term maintenance Consider dividing chives if overcrowded Maintain harvest and feeding routine Notes: Herb garden should be well-established and producing abundantly.
Nutrient stages in ppm:
seedling: N 40, P 15, K 30.
vegetative: N 100, P 30, K 80.
flowering: N 70, P 40, K 90.
fruiting: N 60, P 30, K 80.
Temperature target: 72/60 C. Humidity: 40-60%. Light schedule: 14 hours per day.
Tags: herbs, soil, beginner, organic, indoor garden, oregano, thyme, rosemary, parsley, chives, fox farm
